Enkolpia were small pendants worn around the neck, and examples have been found tracing back to Late Antiquity. The cross shape was the most popular symbol for such amulets, as the silhouette was believed to have apotropaic qualities. Many enkolpia were designed to hold reliquaries, as can be seen here by the opening function of the pendant. The reliquary was believed to work in tandem with the talismanic qualities of the cross-shape to protect the wearer from harm and evil. Such pieces were very popular in Byzantium, and were made in an assortment of materials, from gold and silver, to bronze and lead.
The Greek inscription seen on this piece refers specifically to the Bible verse John 19.26-27. Jesus, dying upon the cross, addresses his faithful disciple John and his mother, Mary, asking that they behold one another as mother and son.
To discover more about Byzantine art, please visit our relevant blog post: The Byzantine Empire, Art and Christianity.